On Nov. 21, the ’70s teen heartthrob died of organ failure at the age of 67. A few days after his death, the Arrow actress shared a heartbreaking tweet honoring the late star.

“Words cant express the solace our family’s received from all the love & support during this trying time,” she wrote. “My father’s last words were ‘So much wasted time.’ This will be a daily reminder for me to share my gratitude with those I love as to never waste another minute… Thank you.”